Potassium phosphate, tribasic, monohydrate → 5-{4-(5-{[(2R,6S)-2,6-Dimethyl-4-morpholinyl]methyl}-1,3,4-oxadiazol-2-yl)-1-[(4-methyl phenyl)sulfonyl]-1H-indazol-6-yl}-2-(methyloxy)-3-pyridinamine

Participants

Reaction Conditions

Reaction Steps

6-Bromo-4-(5-{[(2R,6S)-2,6-dimethyl-4-morpholinyl]methyl}-1,3,4-oxadiazol-2-yl)-1-[(4-methylphenyl)sulfonyl]-1H-indazole (680 mg, 1.244 mmol) was dissolved in 1,4-dioxane (15 ml) and water (1.5 ml). 2-(methyloxy)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-3-pyridinamine (311 mg, 1.244 mmol), bis(diphenylphosphino)ferrocene palladium dichloride (182 mg, 0.249 mmol) and tripotassium phosphate monohydrate (860 mg, 3.73 mmol) were added and the reaction mixture heated at 80° C. for 2 h. 2-(methoxy)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-3-pyridinamine (0.1 eq, 31 mg) was added and the reaction mixture heated at 80° C. for a further 18 h. The solvent was removed in vacuo and the residue partitioned between DCM (50 ml) and water (50 ml). The layers were separated (hydrophobic frit), the organic concentrated in vacuo and the residue purified by column chromatography, loading in dichloromethane and purified on a silica cartridge (100 g), using a 0-30% methanol(+1% triethylamine)-dichloromethane over 40 mins. The appropriate fractions were combined and concentrated in vacuo to a brown gum. This was purified again by column chromatography, loading in dichloromethane and purified on a silica cartridge (50 g) using a 0-100% ethyl acetate-cyclohexane+0-20% methanol over 40 mins. The appropriate fractions were combined and evaporated in vacuo to give the title compound as a yellow solid (320 mg).

Provenance & Evidence